Block Copolymer Patents (Class 525/280)
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Patent number: 11214672Abstract: Hybrid polymer-inorganic nanocolloids and methods of making them are described.Type: GrantFiled: January 14, 2019Date of Patent: January 4, 2022Assignee: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Rodney D. Priestley, Robert K. Prud'homme, Victoria Lee
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Patent number: 10221273Abstract: A contact lens is provided as hydrate of a copolymer of at least three components including (I) both terminal-polymerizable silicone oligomer exhibiting viscosity of at least 200 mPa·s at room temperature, (II) a hydrophilic monomer component having ethylenically unsaturated group, and (III) a hydrophobic monomer component having molecular weight of at most 700, wherein the lens exhibits an elastic-modulus ratio determined as ratio of a rupture elastic modulus to an initial elastic modulus in range of 0.8-1.2. The contact lens is transparent and by combination of high oxygen permeability and balance between softness and mechanical properties. The lens is produced through a process including steps of stirring material-liquid including at least three components of the above-mentioned (I), (II) and (III) under stirring power of 5-10000 W/m3 per unit volume of the material-liquid for at least 10 minutes, and injecting stirred material-liquid into a lens mold to polymerize material-liquid.Type: GrantFiled: May 29, 2015Date of Patent: March 5, 2019Assignee: MENICON CO., LTD.Inventors: Eri Ito, Katsuhiro Yamamoto
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Patent number: 10183452Abstract: A contact lens is provided as a hydrate of a copolymer of at least three components including (I) a both terminal-polymerizable silicone oligomer component that forms a hydrophobic region (A) in the copolymer, (II) a hydrophilic component that forms a hydrophilic region (C) in the copolymer, and (III) a hydrophobic monomer component having a molecular weight of at most 700 that forms the hydrophilic region (C) together with the component (II) and also contributes to form an intermediate region (B) which does not solvate with a hydrophilic solvent between the hydrophobic region (A) and hydrophilic region (C), wherein the intermediate region (B) shows a volume rate of 5 to 40% with respect to the region (A) in the copolymer, and the contact lens is transparent and free from bubbles therein.Type: GrantFiled: May 29, 2015Date of Patent: January 22, 2019Assignee: MENICON CO., LTD.Inventors: Eri Ito, Katsuhiro Yamamoto
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Patent number: 10048405Abstract: Composite hydrogel films for contact lenses and the methods of manufacturing are provided. The composite hydrogel films are formed by the following steps of: mixing a hydrogel precursor with nanospheres dispersed in a colloid; evaporating the solvent in the mixture; curing the hydrogel to form a composite hydrogel film having nanospheres arranged in amorphous arrays. The composite hydrogel films selectively reflect light in hazardous wavelengths.Type: GrantFiled: May 18, 2016Date of Patent: August 14, 2018Assignee: FENG CHIA UNIVERSITYInventor: Chun-Feng Lai
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Patent number: 9085743Abstract: The present invention provides an engine oil composition containing polymethylacrylate, zinc alkyldithiophosphate, molybdenum dithiocarbamate, a hindered phenol antioxidant, and a fixed mineral oil. The engine oil composition of the present invention has a low-temperature viscosity The fuel efficiency of the engine oil is improved, when the engine oil composition with an improved low-temperature performance, a maintained high-temperature viscosity, an improved wear resistance, and an improved oxidation resistance is used. Further, the durability of the engine oil can also be ensured when the engine oil composition of the present invention is used.Type: GrantFiled: November 4, 2010Date of Patent: July 21, 2015Assignees: Hyundai Motor Company, Kia Motors Corporation, S-Oil CorporationInventors: WonJin Yoon, Do-Kon Jeong
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Patent number: 8969483Abstract: A photoresist material comprising a polymer with at least two acrylate derivatives incorporated therein, and a photo-acid generator for generating an acid by exposure, wherein at least one of the two acrylate derivatives incorporated therein comprises a norbornyl moiety having a lactone structure, and at least one of the two acrylate derivatives comprises an ester-substituted tetracyclododecyl moiety.Type: GrantFiled: November 28, 2012Date of Patent: March 3, 2015Assignee: NEC CorporationInventors: Katsumi Maeda, Shigeyuki Iwasa, Kaichiro Nakano, Etsuo Hasegawa
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Publication number: 20140322545Abstract: A disclosure provides a resin composition, a prepreg, and a substrate employing the same. According to an embodiment of the disclosure, the resin composition includes a polyphenylene ether compound, and a bismaleimide. The prepreg includes a cured product of the resin composition. The substrate includes a product fabricated by the resin composition or the prepreg.Type: ApplicationFiled: April 30, 2014Publication date: October 30, 2014Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Wei-Ta YANG, Li-Chun LIANG, I-Hong LIN, Chung-Cheng LIN
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Publication number: 20140299575Abstract: A BCP having first block of first monomer and second block of second monomer, adapted to undergo a transition from disordered state to ordered state at a temperature less than TOD, further including a bridging moiety having a functional group to provide hydrogen bonding between bridging moieties of adjacent first and second BCP molecules when in the ordered state and at a temperature in excess of a glass transition temperature Tg for the BCP. Composition including BCP comprising first block of first monomer and second block of second monomer, and a crosslinking compound having first and second terminal groups joined by a central moiety and arranged to crosslink second blocks of adjacent first and second BCP molecules by providing non-covalent bonding between the terminal groups and a functional group of the second monomer of the second blocks when the BCP is in the ordered state.Type: ApplicationFiled: June 7, 2012Publication date: October 9, 2014Applicant: ASML Netherlands B.V.Inventors: Aurelie Marie Andree Brizard, Wilhelmus Sebastianus Marcus Maria Ketelaars, Sander Frederik Wuister, Roelof Koole, Emiel Peeters, Christianus Martinus Van Heesch, Henri Marie Joseph Boots, Thanh Trung Nguyen
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Patent number: 8853311Abstract: In one embodiment, a block copolymer-containing composition includes PS-b-PXVP and a lithium salt, where “X” is 2 or 4. All lithium salt is present in the composition at no greater than 1 ppm by weight. In one embodiment, a homogenous block copolymer-including comprising has PS-b-PXVP present in the composition at no less than 99.99998% by weight, where “X” is 2 or 4. Methods of forming such compositions are disclosed.Type: GrantFiled: September 11, 2012Date of Patent: October 7, 2014Assignee: Micron Technology, Inc.Inventors: Dan Millward, Scott Sills
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Patent number: 8802783Abstract: A photoresist material comprising a polymer with at least two acrylate derivatives incorporated therein, and a photo-acid generator for generating an acid by exposure, wherein at least one of the two acrylate derivatives incorporated therein comprises a norbornyl moiety having a lactone structure, and at least one of the two acrylate derivatives comprises an ester-substituted tetracyclododecyl moiety.Type: GrantFiled: November 28, 2012Date of Patent: August 12, 2014Assignee: NEC CorporationInventors: Katsumi Maeda, Shigeyuki Iwasa, Kaichiro Nakano, Etsuo Hasegawa
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Publication number: 20140213517Abstract: Provided are novel biocompatible copolymers and compositions comprising the copolymers. The copolymers are non-toxic and typically have an LCST below 37° C. Compositions comprising the copolymers can be used for wound treatment, as a cellular growth matrix or niche and for injection into cardiac tissue to repair and mechanically support damaged tissue. The copolymers comprise numerous ester linkages so that the copolymers are erodeable in situ. Degradation products of the copolymers are soluble and non-toxic. The copolymers can be amine-reactive so that they can conjugate with proteins, such as collagen. Active ingredients, such as drugs, can be incorporated into compositions comprising the copolymers.Type: ApplicationFiled: January 28, 2014Publication date: July 31, 2014Applicant: University of Pittsburgh - Of the Commonwealth System of Higher EducationInventors: Kazuro Lee Fujimoto, Jianjun Guan, Zuwei Ma, William R. Wagner
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Patent number: 8750762Abstract: To provide a charging member that can have a uniform electrical resistance, can not easily change in electrical resistance even by any long-term continuous electrification and, as a result thereof, may cause less change in its charging performance with time. A charging member having a conductive support and an elastic-material layer; the elastic-material layer comprising a vulcanized rubber; the vulcanized rubber being a vulcanized product of a composition which comprises i) a binder polymer comprising a polymer having a butadiene skeleton and ii) carbon black as electrically conductive particles; and the polymer having a butadiene skeleton has a molecular terminal modified with an atomic group having a specific structure.Type: GrantFiled: February 15, 2011Date of Patent: June 10, 2014Assignee: Canon Kabushiki KaishaInventors: Masaaki Harada, Hiroaki Watanabe, Keiji Nose
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Publication number: 20140142250Abstract: An organic crystalline composition is provided. The organic crystalline composition includes a main material having ?-conjugated back bone and a functional group containing an atom having an unshared electron pair, and a linking material combining with the adjacent main material at the functional group by quaternization, organic material-metal interaction, ionic bonding, or hydrogen bonding.Type: ApplicationFiled: December 3, 2013Publication date: May 22, 2014Applicant: Gwangju Institute of Science And TechnologyInventors: Jae-Suk Lee, Changej Mohammad, Haeng-Deog Koh, Samal Shashadhar, Nam-Goo Kang, Won-Jung Shin, Young-Jae Kim, Hong-Joon Lee, Walaa Elsawy
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Patent number: 8722812Abstract: An object of the present invention is to provide an inorganic-organic hybrid particle which has a structure where an organic material composed of two or more different components forms separate phases, wherein an inorganic material is included in the phase, and a method for producing the inorganic-organic hybrid particle. The above object is solved by an inorganic-organic hybrid particle which has a structure where an organic material composed of two or more different components forms separate phases, wherein one or more inorganic materials are included in at least one phase.Type: GrantFiled: February 12, 2010Date of Patent: May 13, 2014Assignee: Japan Science and Technology AgencyInventors: Hiroshi Yabu, Takeshi Higuchi, Kiwamu Motoyoshi, Kazutaka Koike
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Publication number: 20140124710Abstract: Provided are: a conjugated block copolymer capable of increasing the amount of optical absorption by a photoelectric conversion active layer and controlling the morphology thereof and capable of achieving excellent photoelectric conversion efficiency; and a photoelectric conversion element comprising a composition including an electron accepting material using this kind of conjugated block polymer. A ?-electron conjugated block copolymer comprises: a polymer block (A) and a polymer block (B), each of which involves a monomer unit having at least one fused ?-conjugated skeleton including at least one thiophene ring in one part of the chemical structure thereof, the polymer block (A) and the polymer block (B) have different monomer units from each other.Type: ApplicationFiled: March 30, 2012Publication date: May 8, 2014Applicant: KURARAY CO., LTD.Inventors: Takafumi Izawa, Hiromasa Shibuya, Takashi Sugioka, Takuya Inagaki, Yasushi Morihara, Atsuhiro Nakahara, Akio Fujita, Hiroyuki Ogi
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Publication number: 20140121326Abstract: A method for forming a conjugated heteroaromatic polymer is described, wherein at least one compound of formula (1) is polymerized using an acid as a catalyst, wherein X is selected from S, O, Se, Te, PR2 and NR2, Y is hydrogen (H) or a precursor of a good leaving group Y? whose conjugate acid (HY) has a pKa of less than 30, Z is hydrogen (H), silyl, or a good leaving group whose conjugate acid (HY) has a pKa of less than 30, b is 0, 1 or 2, each R1 is a substituent, and the at least one compound of formula (1) being polymerized includes at least one compound of formula (1) with Z?H and Y?H.Type: ApplicationFiled: October 28, 2012Publication date: May 1, 2014Inventors: Chien-Chung Han, Balasubramanian Arumugam
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Publication number: 20140107296Abstract: Methods for fabricating sub-lithographic, nanoscale microstructures utilizing self-assembling block copolymers, and films and devices formed from these methods are provided.Type: ApplicationFiled: December 12, 2013Publication date: April 17, 2014Applicant: Micron Technology, Inc.Inventors: Dan B. Millward, Timothy A. Quick
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Patent number: 8697809Abstract: The invention provides a novel block polymer applicable to a light-emitting device. The block polymer has an electron-transporting block and a hole-transporting block, wherein the main chain backbone of the block polymer is polyacetylene.Type: GrantFiled: December 19, 2008Date of Patent: April 15, 2014Assignee: Canon Kabushiki KaishaInventors: Takeyuki Sone, Otto Albrecht, Koji Yano
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Patent number: 8664324Abstract: The present invention pertains to salt modified copolymers wherein one of the monomer units contains a quaternized N-atom structure with a polar substituent. The invention further relates to the use of said copolymers as dispersant especially for color filters.Type: GrantFiled: June 10, 2009Date of Patent: March 4, 2014Assignee: BASF SEInventors: Junichi Tanabe, Mamiko Takesue
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Publication number: 20140018504Abstract: The present invention relates to an impact modifier and a device and a method for the production thereof, as well as to a method for preparing a thermoset material, or a thermoset material precursor, from the impact modifier. The impact modifier comprises at least one copolymer selected from A-B-A, A-B, and A-B-C block copolymers in which: each block is linked to the other by means of a covalent bond or an intermediate molecule that is connected to one of the blocks by a covalent bond and to the other block by another covalent bond; A is a PMMA homopolymer or a copolymer of methyl methacrylate, A preferably being compatible with the resin; C is either (i) a PMMA homopolymer or a copolymer of methyl methacrylate, or (ii) a polymer based on monomers or a mixture of vinyl monomers, and blocks A and C are identical; and B is incompatible or partially compatible with the thermoset resin and incompatible with block A and optional block C.Type: ApplicationFiled: March 23, 2012Publication date: January 16, 2014Applicant: Arkema FranceInventors: Thomas Fine, Jean-Loup Lacombe, Laurent Breysse
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Publication number: 20140011958Abstract: The invention provides a class of block copolymers having a plurality of chemically different blocks, at least a portion of which incorporating polymer side chain groups having a helical secondary structure. The invention also provides structures generated by self-assembly of polymer blends including at least one block copolymer component, such as a brush block polymer or wedge-type block polymer. The invention provides, for example, periodic nanostructures and microstructures generated by self-assembly of block copolymers and polymer blends comprising a mixture of at least one block copolymer component, such as a brush block copolymer, and at least a second component.Type: ApplicationFiled: June 28, 2013Publication date: January 9, 2014Inventors: Garret M. MIYAKE, Raymond WEITEKAMP, Robert H. GRUBBS, Victoria PIUNOVA
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Patent number: 8618221Abstract: Methods of directed self-assembly of multi-block (i.e., triblock and higher-order) copolymers on patterned substrates and related compositions are provided. According to various embodiments, the methods involve depositing copolymer materials on substrates configured to drive the assembly of micro-phase separated films that exhibit the same morphology as that copolymer materials in the bulk. In certain embodiments, binary patterns are used to drive the triblock copolymer films. The binary two-dimensional surface patterns are transformed into three-component and three-dimensional structures throughout the thickness of the overlying copolymer films.Type: GrantFiled: October 12, 2006Date of Patent: December 31, 2013Assignee: Wisconsin Alumni Research FoundationInventors: Paul Franklin Nealey, Frank S. Bates, Juan J. de Pablo
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Publication number: 20130296491Abstract: The invention provides a class of wedge-type block copolymers having a plurality of chemically different blocks, at least a portion of which incorporates a wedge group-containing block providing useful properties. For example, use of one or more wedge group-containing blocks in some block copolymers of the invention significantly inhibits chain entanglement and, thus, the present block copolymers materials provide a class of polymer materials capable of efficient molecular self-assembly to generate a range of structures, such as periodic nanostructures and microstructures. Materials of the present invention include copolymers having one or more wedge group-containing blocks, and optionally for some applications copolymers also incorporating one or more polymer side group-containing blocks. The present invention also provides useful methods of making and using wedge-type block copolymers.Type: ApplicationFiled: March 13, 2013Publication date: November 7, 2013Inventors: Yan XIA, Benjamin R. SVEINBJORNSSON, Robert H. GRUBBS, Raymond WEITEKAMP, Garrett M. MIYAKE, Victoria PIUNOVA, Christopher Scot DAEFFLER
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Publication number: 20130289214Abstract: The present invention relates to a method for preparing a polymer based on N-vinyl lactam monomer units, which comprises a step (E) for controlled radical polymerization of a composition comprising: monomers containing (and most often consisting of) N-vinyl lactam monomers, either identical or different (and generally identical); an agent for controlling the radical polymerization, for example comprising a thiocarbonylthio group —S(C?S)—; and a radical polymerization initiator which is a redox system comprising a reducing agent (Red) and an oxidizing agent (Ox).Type: ApplicationFiled: September 22, 2011Publication date: October 31, 2013Applicants: Centre National De La Recherche Scientifique (C.N.R.S.), Rhodia OperationsInventors: Mathias Destarac, Aymeric Guinaudeau, Stéphane Mazieres, James Wilson
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Patent number: 8492481Abstract: The present invention relates to a block polymeric material. Typically the block polymer comprises units capable of having an average cationic charge density of about 15 or less, preferably 5 or less, more preferably from about 0.05 to about 5, even more preferably from about 0.05 to about 2.77, even more preferably from about 0.1 to about 2.75, most preferably from about 0.75 to about 2.25 units per 100 daltons molecular weight at a pH of from about 4 to about 12. The polymeric material is a suds enhancer and a suds volume extender for personal care products such as soaps and shampoos. The compositions have increased effectiveness for preventing re-deposition of grease during hand and body washing. The polymers are also effective as a soil release agent in fabric cleaning compositions.Type: GrantFiled: March 25, 2011Date of Patent: July 23, 2013Assignee: Rhodia Inc.Inventors: Dominic Wai-Kwing Yeung, Vance Bergeron, Jean-Francois Bodet, Mark R. Sivik, Bernard W. Kluesener, William M. Scheper
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Patent number: 8466234Abstract: The present invention relates to the production of amphiphilic copolymer networks, or co-networks, and to methods for preparing amphiphilic co-networks. Furthermore, the present invention relates to products and/or films made from the amphiphilic co-networks produced in accordance with the synthesis methods of the present invention. In one embodiment, the present invention is related to crosslinkable and/or polymerizable compositions that can be utilized to form amphiphilic co-networks, where such compositions are block copolymer compositions that are formed from the combination of at least one hydrophilic segment, at least one hydrophobic segment, and at least one crosslinkable and/or polymerizable segment. In yet another embodiment, the present invention relates to amphiphilic co-networks that are optically clear and highly oxyphilic.Type: GrantFiled: April 4, 2008Date of Patent: June 18, 2013Assignee: The University of AkronInventors: Joseph P. Kennedy, Radhakrishnan Karunakaran
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Publication number: 20130144011Abstract: The present invention relates to a process for improving the flow properties of a polymer melt formed from a thermoplastic polymer, the use of particular copolymeric additives to improve the flow properties of a polymer melt formed from a thermoplastic polymer and the use of said polymeric additives as processing aids.Type: ApplicationFiled: June 28, 2011Publication date: June 6, 2013Applicant: BASF SEInventors: Raphaël Dabbous, Steffen Onclin, Hartmut Römling
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Publication number: 20130020278Abstract: A block copolymer for manufacturing a nanowire and a method of manufacturing the same are disclosed. The block copolymer and the method of manufacturing a nanowire using the same are used to fabricate a nanowire having a diameter of less than or equal to 30 nm and a porous nanowire having a diameter within the same range and pores with a diameter of less than or equal to 10 nm.Type: ApplicationFiled: September 21, 2012Publication date: January 24, 2013Applicant: UNIST Academy-Industry Research CorporationInventor: UNIST Academy-Industry Research Corporation
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Patent number: 8349912Abstract: Crosslink agents used to copolymerize at least one hydrophilic monomer with at least one lens monomer typically used to prepare polymeric materials for ophthalmic lenses. The crosslink agents have a relatively high selectivity for the hydrophilic monomer and limited reactivity with the crosslink agent used to polymerize the lens monomer. Accordingly, the invention is also directed to a hydrophilic crosslinked polymer that comprises at least two monomeric units and at least two different crosslink units. The use of the dual crosslink system provides an improved means to control the final chemical, physical and structural characteristics of the resulting polymer.Type: GrantFiled: September 12, 2011Date of Patent: January 8, 2013Assignee: Bausch & Lomb IncorporatedInventors: Ivan M. Nunez, Joseph A. McGee, David E. Seelye
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Publication number: 20120309047Abstract: A sensor system, and a method of detecting a target analyte, comprises a chemically functionalized block copolymer, and a target analyte. The block copolymer exhibits a color change in the visible spectrum upon exposure to the target analyte.Type: ApplicationFiled: May 31, 2012Publication date: December 6, 2012Applicant: University of Maryland, College ParkInventors: Peter Kofinas, Omar B. Ayyub, Jennifer W. Sekowski, Ta-I Yang
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Patent number: 8314206Abstract: In one embodiment, a block copolymer-containing composition includes PS-b-PXVP and a lithium salt, where “X” is 2 or 4. All lithium salt is present in the composition at no greater than 1 ppm by weight. In one embodiment, a homogenous block copolymer-including comprising has PS-b-PXVP present in the composition at no less than 99.99998% by weight, where “X” is 2 or 4. Methods of forming such compositions are disclosed.Type: GrantFiled: December 2, 2008Date of Patent: November 20, 2012Assignee: Micron Technology, Inc.Inventors: Dan Millward, Scott Sills
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Patent number: 8263706Abstract: An acrylic polymeric composition comprising a melt blend of a thermoplastic high molecular weight acrylic material (HMWA) and a thermoplastic low molecular weight acrylic material (LMWA) is described. At least 70% w/w of the HMWA and the LMWA comprises an alkyl (alk)acrylate (co)polymer. The HMWA has a weight average molecular weight (Mw) of between 40 k Daltons and 1000 k Daltons and the LMWA has a weight average molecular weight (Mw) of between the entanglement molecular weight (Me) (expressed in k Daltons) and 250 k Daltons. A method of producing an acrylic polymeric composition and the use of an acrylic polymeric composition are described together with thick section molded products.Type: GrantFiled: April 18, 2006Date of Patent: September 11, 2012Assignee: Lucite International UK LimitedInventors: Ian Fraser, Ian Robinson
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Patent number: 8236899Abstract: Zwitterionic block copolymers having oppositely charged or chargeable terminal groups, and methods of making and using the same, are disclosed. The zwitterionic block copolymers can undergo microphase separation.Type: GrantFiled: August 9, 2011Date of Patent: August 7, 2012Assignee: Micron Technology, Inc.Inventors: Dan Millward, Eugene P. Marsh
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Publication number: 20120130020Abstract: Amino-acid based poly(ester amide) (PEA) or poly(ester ether amide) (PEEA) polymers having pendant cross-linkable functional groups. The polymers can be cross-linked to form a hydrogel. These polymers can be used in biomedical applications.Type: ApplicationFiled: May 24, 2010Publication date: May 24, 2012Applicant: CORNELL UNIVERSITYInventors: Chih-Chang Chu, Xuan Pang
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Publication number: 20120116007Abstract: Provided are novel polymer brushes that may be used in underlying buffer or imaging layers for block copolymer lithography. The novel polymer brushes include X-A-b-B and X-A-b-C block copolymer brushes, with X an anchoring group, the A block a lithographically sensitive polymer, and the C block a random copolymer. According to various embodiments; polymer block brushes for neutral and preferential layers are provided; the neutral layers non-preferential to the overlying block copolymer and the preferential layers preferential to a block of the overlying block copolymer. Also provided are novel methods of patterning polymer block brush layers as well as polymer block brush buffer and imaging layers that are directly patternable by e-beam, deep UV, extreme UV, X-ray or other lithographic methods.Type: ApplicationFiled: October 10, 2011Publication date: May 10, 2012Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATIONInventors: Padma Gopalan, Eungnak Han
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Publication number: 20120083523Abstract: According to an aspect of the present invention, implantable or insertable medical devices are provided, which contain one or more polymeric regions. These polymeric regions, in turn, contain one or more polymers, at least one of which is a copolymer that includes the following: (a) one or more unsaturated hydrocarbon monomer species and (b) one or more heteroatom-containing monomer species.Type: ApplicationFiled: December 8, 2011Publication date: April 5, 2012Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventors: Robert E. RICHARD, Marlene C. SCHWARZ, Rudolf FAUST
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Publication number: 20120041150Abstract: An object o of the present invention is to provide an inorganic-organic hybrid particle which has a structure where an organic material composed of two or more different components forms separate phases, wherein an inorganic material is included in the phase, and a method for producing the inorganic-organic hybrid particle. The above object is solved by an inorganic-organic hybrid particle which has a structure where an organic material composed of two or more different components forms separate phases, wherein one or more inorganic materials are included in at least one phase.Type: ApplicationFiled: February 12, 2010Publication date: February 16, 2012Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Hiroshi Yabu, Takeshi Higuchi, Kiwamu Motoyoshi, Kazutaka Koike
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Publication number: 20120041138Abstract: The present invention is a process for producing a linear block copolymer, useful as a dispersant for pigment, wherein the block copolymer comprises acetoacetyl amine functional groups which serve as pigment anchoring groups. The linear block copolymer can be an AB, ABC, or ABA block copolymer. The linear block copolymer produced by the present invention can be useful in dispersing and stabilizing a wide range of pigments in solvent based systems, and are particularly useful in providing pigment dispersions that are used in coating compositions for automobiles and trucks, where they provide improved efficiency of pigment use, lower paint viscosity, and reduced emission of volatile organic solvent.Type: ApplicationFiled: October 25, 2011Publication date: February 16, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventor: SHEAU-HWA MA
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Publication number: 20110281934Abstract: Provided herein are micelles comprising a plurality of copolymers. In certain instances, micelles provided herein are pH sensitive particles.Type: ApplicationFiled: May 13, 2009Publication date: November 17, 2011Applicants: PHASERX, INC., UNIVERSITY OF WASHINGTONInventors: Paul Johnson, Patrick S. Stayton, Allan S. Hoffman, Robert Overell, Anna Gall, Mary Prieve, Amber Paschal, Charbel Diab, Priyadarsi De
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Patent number: 8053489Abstract: Crosslink agents used to copolymerize at least one hydrophilic monomer with at least one lens monomer typically used to prepare polymeric materials for ophthalmic lenses. The crosslink agents have a relatively high selectivity for the hydrophilic monomer and limited reactivity with the crosslink agent used to polymerize the lens monomer. Accordingly, the invention is also directed to a hydrophilic crosslinked polymer that comprises at least two monomeric units and at least two different crosslink units. The use of the dual crosslink system provides an improved means to control the final chemical, physical and structural characteristics of the resulting polymer.Type: GrantFiled: July 8, 2008Date of Patent: November 8, 2011Assignee: Bausch & Lomb IncorporatedInventors: Ivan M. Nunez, Joseph A. McGee, David E. Seelye
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Patent number: 8022147Abstract: Zwitterionic block copolymers having oppositely charged or chargeable terminal groups, and methods of making and using the same, are disclosed. The zwitterionic block copolymers can undergo microphase separation.Type: GrantFiled: February 11, 2011Date of Patent: September 20, 2011Assignee: Micron Technology, Inc.Inventors: Dan Millward, Eugene P. Marsh
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Publication number: 20110224375Abstract: The instant invention pertains to the preparation of polymers or copolymers wherein in a first step a controlled free radical polymerization process is carried out and in a second step the resulting polymer is modified by transesterification reactions. The final modified polymer or copolymer is useful as a dispersant for pigments. Further aspects of the invention are the thus prepared polymers or copolymers, a pigment concentrate containing the polymer or copolymer and a coating material containing the pigment concentrate.Type: ApplicationFiled: May 20, 2011Publication date: September 15, 2011Inventors: Ralf KNISCHKA, Ernst Eckstein, Clemens Auschra, Akira Matsumoto
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Publication number: 20110213066Abstract: Compositions and methods are included for preparing a hairy polymeric nanoparticle including first and second shell block polymer arms are at least partially phase-separated and surround a polymeric core. One type of polymeric arm can have a greater polarity than the other type(s) of polymeric arms. A rubber composition including the hairy nanoparticles is also provided.Type: ApplicationFiled: April 5, 2010Publication date: September 1, 2011Inventors: Xiaorong Wang, Hideki Kitano, James H. Pawlow, Christopher G. Robertson, Yaohong Chen, Yuan-Yong Yan
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Publication number: 20110144260Abstract: The present invention pertains to salt modified copolymers wherein one of the monomer units contains a quaternized N-atom structure with a polar substituent. The invention further relates to the use of said copolymers as dispersant especially for color filters.Type: ApplicationFiled: June 10, 2009Publication date: June 16, 2011Applicant: BASF SEInventors: Junichi Tanabe, Mamiko Takesue
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Publication number: 20110143434Abstract: Described herein are copolymers, and methods of making and utilizing such copolymers. Such copolymers have at least two blocks: a first block that has at least one unit that is hydrophilic at physiologic pH, and a second block that has hydrophobic groups. This second block further has at least one unit with a group that is anionic at about physiologic pH. The described copolymers are disruptive of a cellular membrane, including an extracellular membrane, an intracellular membrane, a vesicle, an organelle, an endosome, a liposome, or a red blood cell. Preferably, in certain instances, the copolymer disrupts the membrane and enters the intracellular environment. In specific examples, the copolymer is endosomolytic.Type: ApplicationFiled: May 13, 2009Publication date: June 16, 2011Applicants: UNIVERSITY OF WASHINGTON, PHASERX, INC.Inventors: Patrick S. Stayton, Allan S. Hoffman, Anthony J. Convertine, Danielle Benoit, Craig L. Duvall, Paul H. Johnson, Anna S. Gall
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Patent number: 7951876Abstract: A multi-functional polymer defined by the formula (Q-R¦n—Z—P2—Y where (Q-R)n is a functionality cluster, Q is a functional group, R is a multi-valent organic group, P2 is a long-chain polymer, n is an integer from about 2 to about 10, Y is a proton, a weak functional group, or a selective functional group, and Z is a branch point where the functionality clusters join the long-chain polymer.Type: GrantFiled: March 16, 2007Date of Patent: May 31, 2011Assignee: Bridgestone CorporationInventors: Georg G. A. Böhm, William L. Hergenrother, Christine M. Rademacher, Christopher G. Robertson
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Publication number: 20110123636Abstract: Provided herein are micellic assemblies comprising a plurality of copolymers. In certain instances, micellic assemblies provided herein are pH sensitive particles.Type: ApplicationFiled: May 13, 2009Publication date: May 26, 2011Applicants: UNIVERSITY OF WASHINGTON, PHASERX, INC.Inventors: Patrick S. Stayton, Allan S. Hoffman, Anthony Convertine, Craig L. Duvall, Danielle Benoit, Robert W. Overell, Paul H. Johnson, Anna S. Gall, Mary G. Prieve, Amber E.E. Paschal, Charbel Diab, Priyadarsi De
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Publication number: 20110124820Abstract: Provided is a crystalline organic polymer in which a main chain formed of amorphous polymer or monomer having a functional group is combined with a side chain by quaternization, cross-linking, hydrogen bonding or organic material-metal interaction. The main chain material having a functional group is combined with the side chain material to have crystallinity, and the organic polymer having crystallinity exhibits excellent diode characteristics.Type: ApplicationFiled: May 15, 2008Publication date: May 26, 2011Inventors: Jae-Suk Lee, Changej Mohammad, Haeng-Deog Koh, Samal Shashadhar, Nam-Goo Kang, Won-Jung Shin, Young-Jae Kim
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Patent number: 7943703Abstract: A method of creating a bioadhesive in a substantially aqueous environment is disclosed. The method includes the steps of placing an anionicially polymerized block copolymer containing an amide, which is prepared by reacting a difunctional anionic initiator with a sterically hindered ester of methacrylic acid (SEMA), into a solvent to allow the solvent to swell the block copolymer; reacting the anionically polymerized hindered ester of methacrylic acid with methacrylic acid (MMA); hydrolyzing the anionically polymerized block copolymer with an aqueous solution to afford a methyl methacrylate-methacrylic acid-methyl methacrylate block copolymer (MMA-MAA-MMA); reacting the MMA-MAA-MMA block copolymer with 3,4-dihydroxyphenyl alanine to afford an amide with the MAA portion of the block copolymer; and placing the solvent swollen block copolymer in water. The water is exchanged with the solvent to provide a bioadhesive in an aqueous environment.Type: GrantFiled: February 27, 2009Date of Patent: May 17, 2011Assignee: Northwestern UniversityInventors: Kenneth R. Shull, Murat Guvendiren, Phillip B. Messersmith, Bruce P. Lee
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Patent number: 7910660Abstract: Zwitterionic block copolymers having oppositely charged or chargeable terminal groups, and methods of making and using the same, are disclosed. The zwitterionic block copolymers can undergo microphase separation. In some embodiments a zwitterionic block copolymer includes a first terminal block having a positively charged or chargeable group at a terminal end, and a second terminal block having a negatively charged or chargeable group at another terminal end. The zwitterionic block copolymer is configured to undergo microphase separation to assemble into alternating lamellar domains; with one of the alternating domains being composed of the first terminal block, and with another of the alternating domains being composed of the second terminal block.Type: GrantFiled: April 15, 2010Date of Patent: March 22, 2011Assignee: Micron Technology, Inc.Inventors: Dan B. Millward, Eugene P. Marsh